Chicken and leek pie with a golden puff pastry lid is a comforting meal built around a few straightforward ingredients. Tender chicken and sweet leeks sit in a creamy thyme sauce, while the pastry bakes into a crisp, flaky topping. This version uses a single lid, making assembly simple and giving every serving a generous piece of crust. You can prepare the filling in a frying pan and finish the pie in a family-sized baking dish.
Choose a dish and prepare your ingredients
This recipe serves four. Use a baking dish approximately 24 cm across, with enough depth to hold the filling below the rim. A wider dish gives you more pastry per serving. Check that your pastry sheet covers the dish before you begin cooking, allowing a small overhang around the edge.
Chicken thighs stay tender through simmering and baking. Cut them into similar pieces so they cook evenly. Leeks need a little attention before cooking because soil can hide between their layers. Split them lengthways, rinse thoroughly, and drain before slicing. Use the white and pale green parts, trimming away the tough darker leaves.
Ingredients
For the chicken and leek filling
- 600 g boneless, skinless chicken thighs, cut into bite-sized pieces
- 3 medium leeks, washed and sliced
- 1 tablespoon olive oil
- 30 g butter
- 2 garlic cloves, finely chopped
- 35 g plain flour
- 350 ml lightly salted chicken stock
- 100 ml double cream or heavy cream
- 1 teaspoon Dijon mustard
- 1 teaspoon fresh thyme leaves
- Salt and freshly ground black pepper, to taste
For the pastry topping
- 1 sheet ready-rolled puff pastry, approximately 300 g, large enough to cover your dish
- 1 egg, beaten
- A little plain flour for rolling, if needed
Keep the pastry refrigerated while you make the filling. Cold pastry is easier to lift and shape, and its layers remain more distinct. If using frozen pastry, thaw it according to the packet instructions before starting the recipe.
Cook the filling
- Colour the chicken. Heat the olive oil in a wide, deep frying pan over medium-high heat. Add half the chicken and lightly brown it, turning the pieces as needed. Transfer to a plate and repeat with the remaining chicken. The pieces will finish cooking in the sauce.
- Soften the leeks. Reduce the heat to medium-low. Add the butter and sliced leeks to the same pan. Cook for 10-12 minutes, stirring regularly, until soft and silky. If the pan looks dry, add a small splash of water. Keep the heat gentle so the leeks soften without becoming deeply browned.
- Add the aromatics. Stir in the garlic and thyme. Cook for another minute, stirring so the garlic does not catch on the base of the pan.
- Make the sauce. Sprinkle in the flour and stir for 2 minutes. Gradually pour in the stock, stirring thoroughly after each addition. Scrape up the golden cooking juices from the pan as the sauce comes together.
- Simmer the chicken. Return the chicken and its collected juices to the pan. Simmer gently for 8-12 minutes, stirring occasionally, until the chicken is cooked through. Check a larger piece and continue cooking if necessary.
- Finish and season. Stir in the cream and mustard, then simmer gently for another 2-3 minutes. Taste before adding salt and pepper, especially if your stock is already well seasoned.
The sauce should coat the chicken and leeks thickly. If it looks watery, simmer uncovered for a few more minutes. If it is too thick to stir easily, add a little stock. The filling will thicken slightly as it cools.
Cool the filling and add the lid
Spoon the filling into the baking dish and spread it evenly. Allow it to cool until it has stopped steaming and feels only slightly warm. Putting pastry directly over a hot filling softens it quickly and makes a neat lid harder to achieve.
- Preheat the oven. Heat to 200 degrees C fan or 220 degrees C conventional. Place a baking tray on the middle shelf to catch any drips from the pie.
- Prepare the dish. Wipe sauce from the rim and brush the rim lightly with beaten egg. This helps the pastry stick around the edge.
- Lay on the pastry. Unroll the sheet and place it over the filling without stretching it. Trim to leave roughly 2 cm beyond the rim. Press gently around the dish to secure it.
- Glaze the surface. Brush a thin layer of beaten egg over the lid. Avoid flooding the cut edges with egg, which can stick the layers together.
- Make steam vents. Cut two short slits in the centre. If you want to use the trimmings as decorations, add them sparingly and brush them with egg too.
Handle the pastry lightly. If it becomes floppy while you work, put the assembled pie in the refrigerator briefly before baking. A simple lid with clearly defined edges gives the pastry room to rise.
Bake and serve
Bake for 25-35 minutes, until the pastry is puffed and deeply golden and the filling bubbles through the vents. Start checking towards the earlier end of the range. Different dish shapes and pastry thicknesses can affect how quickly the lid cooks.
If the top browns before the centre looks fully baked, loosely cover it with foil and continue cooking. Look for a dry, layered surface around the vents. A small edge can be lifted carefully with a knife to check for any doughy pastry underneath.
Rest the pie for 5-10 minutes before serving. Divide the lid with a sharp knife, then spoon the filling onto plates and add a piece of pastry to each portion. Steamed peas, green beans, or lightly dressed cabbage make easy accompaniments. Mashed potatoes are a good addition when you want a more substantial meal.
Simple adjustments
For a different herbal flavour, replace the thyme with chopped tarragon and add it with the cream. Chicken breast can replace the thighs, though it benefits from a gentle simmer and careful checking to avoid overcooking.
You can also use cooked chicken. Prepare the leek sauce first and simmer until thick, then fold in the chicken and heat it through before cooling the filling and adding the pastry. Whichever chicken you choose, keep the sauce thick enough to cling to the pieces so each spoonful carries both filling and gravy.
